Zinc ZA-12 (Zn-11Al-1Cu-0.025Mg), Sand Cast

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Zinc ZA-12 (Zn-11Al-1Cu-0.025Mg), Sand Cast
Categories:	Metal; Nonferrous Metal; Zinc Alloy
Material Notes:	Used in bearing applications. ZA-12 has a higher bearing load capacity than bronze bearing alloys, although its environment (both temperature and corrosive) is more limited.
Key Words:	UNS Z35630 (ingot); UNS Z35631 (Casting); ZA-12 Zinc Foundry Alloy; Previously ILZRO 12
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Physical Properties	Original Value	Comments

Density	6.04 g/cc

Mechanical Properties	Original Value	Comments
Hardness, Brinell	94	500 kg load; 10 mm hardened steel ball
Hardness, Knoop	119	Estimated from Brinell Value
Hardness, Rockwell A	39.5	Estimated from Brinell Value
Hardness, Rockwell B	59	Estimated from Brinell Value
Hardness, Vickers	106	Estimated from Brinell Value
Tensile Strength, Ultimate	299 MPa @Diameter 12.7 mm
Tensile Strength, Yield	205 MPa @Strain 0.2 %
Elongation at Break	1.5 %	in 5 cm
Modulus of Elasticity	83.0 GPa
Compressive Strength	230 MPa
Fatigue Strength	103 MPa @# of Cycles 5.00e+8	Reverse Bend
Fracture Toughness	14.5 MPa-m½
Shear Strength	253 MPa
Charpy Impact, Unnotched	26.0 J @Thickness 6.35 mm	square bar

Electrical Properties	Original Value	Comments
Electrical Resistivity	0.00000610 ohm-cm

Thermal Properties	Original Value	Comments
Heat of Fusion	118 J/g
CTE, linear	24.1 µm/m-°C @Temperature 20.0 °C
Specific Heat Capacity	0.450 J/g-°C @Temperature 20.0 - 100 °C
Thermal Conductivity	116 W/m-K
Melting Point	377 - 432 °C
Solidus	377 °C
Liquidus	432 °C

Processing Properties	Original Value	Comments
Casting Temperature	460 - 490 °C

Component Elements Properties	Original Value	Comments
Aluminum, Al	10.5 - 11.5 %	Addition, Casting
	10.8 - 11.5 %	Addition, Ingot form
Cadmium, Cd	<= 0.0050 %	Impurity, Ingot form
	<= 0.0060 %	Impurity, Casting
Copper, Cu	0.50 - 1.2 %	Addition, Casting
	0.50 - 1.2 %	Addition, Ingot form
Iron, Fe	<= 0.065 %	Impurity, Ingot form
	<= 0.075 %	Impurity, Casting
Lead, Pb	<= 0.0050 %	Impurity, Ingot form
	<= 0.0060 %	Impurity, Casting
Magnesium, Mg	0.015 - 0.030 %	Addition, Casting
	0.020 - 0.030 %	Addition, Ingot form
Tin, Sn	<= 0.0020 %	Impurity, Ingot form
	<= 0.0030 %	Impurity, Casting
Zinc, Zn	87.193 - 88.68 %	As balance; Ingot per ASTM B 669
	87.18 - 88.985 %	As balance; Castings per ASTM B 791

References for this datasheet.

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MZN12A / 14516

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